1 | /* -*- C++ -*- |
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2 | * |
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3 | * This file is a part of LEMON, a generic C++ optimization library |
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4 | * |
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5 | * Copyright (C) 2003-2007 |
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6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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8 | * |
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9 | * Permission to use, modify and distribute this software is granted |
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10 | * provided that this copyright notice appears in all copies. For |
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11 | * precise terms see the accompanying LICENSE file. |
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12 | * |
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13 | * This software is provided "AS IS" with no warranty of any kind, |
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14 | * express or implied, and with no claim as to its suitability for any |
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15 | * purpose. |
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16 | * |
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17 | */ |
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18 | |
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19 | #ifndef LEMON_MAPS_H |
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20 | #define LEMON_MAPS_H |
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21 | |
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22 | #include <iterator> |
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23 | #include <functional> |
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24 | #include <vector> |
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25 | |
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26 | #include <lemon/bits/utility.h> |
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27 | // #include <lemon/bits/traits.h> |
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28 | |
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29 | ///\file |
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30 | ///\ingroup maps |
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31 | ///\brief Miscellaneous property maps |
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32 | /// |
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33 | #include <map> |
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34 | |
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35 | namespace lemon { |
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36 | |
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37 | /// \addtogroup maps |
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38 | /// @{ |
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39 | |
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40 | /// Base class of maps. |
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41 | |
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42 | /// Base class of maps. |
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43 | /// It provides the necessary <tt>typedef</tt>s required by the map concept. |
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44 | template<typename K, typename T> |
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45 | class MapBase { |
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46 | public: |
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47 | /// The key type of the map. |
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48 | typedef K Key; |
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49 | /// The value type of the map. (The type of objects associated with the keys). |
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50 | typedef T Value; |
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51 | }; |
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52 | |
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53 | /// Null map. (a.k.a. DoNothingMap) |
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54 | |
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55 | /// This map can be used if you have to provide a map only for |
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56 | /// its type definitions, or if you have to provide a writable map, |
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57 | /// but data written to it is not required (i.e. it will be sent to |
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58 | /// <tt>/dev/null</tt>). |
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59 | template<typename K, typename T> |
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60 | class NullMap : public MapBase<K, T> { |
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61 | public: |
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62 | typedef MapBase<K, T> Parent; |
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63 | typedef typename Parent::Key Key; |
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64 | typedef typename Parent::Value Value; |
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65 | |
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66 | /// Gives back a default constructed element. |
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67 | T operator[](const K&) const { return T(); } |
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68 | /// Absorbs the value. |
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69 | void set(const K&, const T&) {} |
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70 | }; |
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71 | |
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72 | ///Returns a \c NullMap class |
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73 | |
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74 | ///This function just returns a \c NullMap class. |
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75 | ///\relates NullMap |
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76 | template <typename K, typename V> |
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77 | NullMap<K, V> nullMap() { |
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78 | return NullMap<K, V>(); |
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79 | } |
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80 | |
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81 | |
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82 | /// Constant map. |
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83 | |
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84 | /// This is a readable map which assigns a specified value to each key. |
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85 | /// In other aspects it is equivalent to the \c NullMap. |
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86 | template<typename K, typename T> |
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87 | class ConstMap : public MapBase<K, T> { |
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88 | private: |
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89 | T v; |
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90 | public: |
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91 | |
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92 | typedef MapBase<K, T> Parent; |
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93 | typedef typename Parent::Key Key; |
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94 | typedef typename Parent::Value Value; |
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95 | |
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96 | /// Default constructor |
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97 | |
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98 | /// Default constructor. |
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99 | /// The value of the map will be uninitialized. |
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100 | /// (More exactly it will be default constructed.) |
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101 | ConstMap() {} |
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102 | |
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103 | /// Constructor with specified initial value |
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104 | |
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105 | /// Constructor with specified initial value. |
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106 | /// \param _v is the initial value of the map. |
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107 | ConstMap(const T &_v) : v(_v) {} |
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108 | |
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109 | ///\e |
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110 | T operator[](const K&) const { return v; } |
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111 | |
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112 | ///\e |
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113 | void setAll(const T &t) { |
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114 | v = t; |
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115 | } |
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116 | |
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117 | template<typename T1> |
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118 | ConstMap(const ConstMap<K, T1> &, const T &_v) : v(_v) {} |
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119 | }; |
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120 | |
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121 | ///Returns a \c ConstMap class |
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122 | |
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123 | ///This function just returns a \c ConstMap class. |
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124 | ///\relates ConstMap |
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125 | template<typename K, typename V> |
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126 | inline ConstMap<K, V> constMap(const V &v) { |
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127 | return ConstMap<K, V>(v); |
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128 | } |
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129 | |
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130 | |
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131 | template<typename T, T v> |
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132 | struct Const { }; |
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133 | |
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134 | /// Constant map with inlined constant value. |
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135 | |
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136 | /// This is a readable map which assigns a specified value to each key. |
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137 | /// In other aspects it is equivalent to the \c NullMap. |
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138 | template<typename K, typename V, V v> |
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139 | class ConstMap<K, Const<V, v> > : public MapBase<K, V> { |
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140 | public: |
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141 | typedef MapBase<K, V> Parent; |
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142 | typedef typename Parent::Key Key; |
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143 | typedef typename Parent::Value Value; |
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144 | |
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145 | ConstMap() { } |
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146 | ///\e |
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147 | V operator[](const K&) const { return v; } |
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148 | ///\e |
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149 | void set(const K&, const V&) { } |
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150 | }; |
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151 | |
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152 | ///Returns a \c ConstMap class |
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153 | |
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154 | ///This function just returns a \c ConstMap class with inlined value. |
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155 | ///\relates ConstMap |
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156 | template<typename K, typename V, V v> |
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157 | inline ConstMap<K, Const<V, v> > constMap() { |
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158 | return ConstMap<K, Const<V, v> >(); |
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159 | } |
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160 | |
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161 | ///Map based on \c std::map |
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162 | |
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163 | ///This is essentially a wrapper for \c std::map with addition that |
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164 | ///you can specify a default value different from \c Value(). |
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165 | template <typename K, typename T, typename Compare = std::less<K> > |
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166 | class StdMap : public MapBase<K, T> { |
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167 | template <typename K1, typename T1, typename C1> |
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168 | friend class StdMap; |
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169 | public: |
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170 | |
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171 | typedef MapBase<K, T> Parent; |
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172 | ///\e |
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173 | typedef typename Parent::Key Key; |
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174 | ///\e |
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175 | typedef typename Parent::Value Value; |
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176 | ///\e |
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177 | typedef T& Reference; |
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178 | ///\e |
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179 | typedef const T& ConstReference; |
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180 | |
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181 | typedef True ReferenceMapTag; |
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182 | |
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183 | private: |
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184 | |
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185 | typedef std::map<K, T, Compare> Map; |
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186 | Value _value; |
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187 | Map _map; |
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188 | |
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189 | public: |
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190 | |
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191 | /// Constructor with specified default value |
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192 | StdMap(const T& value = T()) : _value(value) {} |
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193 | /// \brief Constructs the map from an appropriate std::map, and explicitly |
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194 | /// specifies a default value. |
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195 | template <typename T1, typename Comp1> |
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196 | StdMap(const std::map<Key, T1, Comp1> &map, const T& value = T()) |
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197 | : _map(map.begin(), map.end()), _value(value) {} |
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198 | |
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199 | /// \brief Constructs a map from an other StdMap. |
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200 | template<typename T1, typename Comp1> |
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201 | StdMap(const StdMap<Key, T1, Comp1> &c) |
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202 | : _map(c._map.begin(), c._map.end()), _value(c._value) {} |
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203 | |
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204 | private: |
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205 | |
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206 | StdMap& operator=(const StdMap&); |
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207 | |
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208 | public: |
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209 | |
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210 | ///\e |
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211 | Reference operator[](const Key &k) { |
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212 | typename Map::iterator it = _map.lower_bound(k); |
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213 | if (it != _map.end() && !_map.key_comp()(k, it->first)) |
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214 | return it->second; |
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215 | else |
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216 | return _map.insert(it, std::make_pair(k, _value))->second; |
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217 | } |
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218 | |
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219 | /// \e |
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220 | ConstReference operator[](const Key &k) const { |
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221 | typename Map::const_iterator it = _map.find(k); |
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222 | if (it != _map.end()) |
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223 | return it->second; |
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224 | else |
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225 | return _value; |
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226 | } |
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227 | |
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228 | /// \e |
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229 | void set(const Key &k, const T &t) { |
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230 | typename Map::iterator it = _map.lower_bound(k); |
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231 | if (it != _map.end() && !_map.key_comp()(k, it->first)) |
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232 | it->second = t; |
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233 | else |
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234 | _map.insert(it, std::make_pair(k, t)); |
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235 | } |
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236 | |
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237 | /// \e |
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238 | void setAll(const T &t) { |
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239 | _value = t; |
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240 | _map.clear(); |
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241 | } |
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242 | |
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243 | }; |
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244 | |
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245 | ///Returns a \c StdMap class |
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246 | |
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247 | ///This function just returns a \c StdMap class with specified |
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248 | ///default value. |
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249 | ///\relates StdMap |
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250 | template<typename K, typename V, typename Compare = std::less<K> > |
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251 | inline StdMap<K, V, Compare> stdMap(const V& value = V()) { |
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252 | return StdMap<K, V, Compare>(value); |
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253 | } |
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254 | |
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255 | ///Returns a \c StdMap class created from an appropriate std::map |
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256 | |
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257 | ///This function just returns a \c StdMap class created from an |
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258 | ///appropriate std::map. |
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259 | ///\relates StdMap |
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260 | template<typename K, typename V, typename Compare = std::less<K> > |
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261 | inline StdMap<K, V, Compare> stdMap( const std::map<K, V, Compare> &map, |
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262 | const V& value = V() ) { |
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263 | return StdMap<K, V, Compare>(map, value); |
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264 | } |
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265 | |
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266 | /// \brief Map for storing values for keys from the range <tt>[0..size-1]</tt> |
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267 | /// |
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268 | /// The current map has the <tt>[0..size-1]</tt> keyset and the values |
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269 | /// are stored in a \c std::vector<T> container. It can be used with |
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270 | /// some data structures, for example \c UnionFind, \c BinHeap, when |
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271 | /// the used items are small integer numbers. |
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272 | /// |
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273 | /// \todo Revise its name |
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274 | template <typename T> |
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275 | class IntegerMap : public MapBase<int, T> { |
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276 | |
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277 | template <typename T1> |
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278 | friend class IntegerMap; |
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279 | |
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280 | public: |
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281 | |
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282 | typedef MapBase<int, T> Parent; |
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283 | ///\e |
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284 | typedef typename Parent::Key Key; |
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285 | ///\e |
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286 | typedef typename Parent::Value Value; |
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287 | ///\e |
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288 | typedef T& Reference; |
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289 | ///\e |
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290 | typedef const T& ConstReference; |
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291 | |
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292 | typedef True ReferenceMapTag; |
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293 | |
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294 | private: |
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295 | |
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296 | typedef std::vector<T> Vector; |
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297 | Vector _vector; |
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298 | |
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299 | public: |
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300 | |
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301 | /// Constructor with specified default value |
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302 | IntegerMap(int size = 0, const T& value = T()) : _vector(size, value) {} |
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303 | |
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304 | /// \brief Constructs the map from an appropriate std::vector. |
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305 | template <typename T1> |
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306 | IntegerMap(const std::vector<T1>& vector) |
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307 | : _vector(vector.begin(), vector.end()) {} |
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308 | |
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309 | /// \brief Constructs a map from an other IntegerMap. |
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310 | template <typename T1> |
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311 | IntegerMap(const IntegerMap<T1> &c) |
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312 | : _vector(c._vector.begin(), c._vector.end()) {} |
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313 | |
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314 | /// \brief Resize the container |
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315 | void resize(int size, const T& value = T()) { |
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316 | _vector.resize(size, value); |
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317 | } |
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318 | |
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319 | private: |
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320 | |
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321 | IntegerMap& operator=(const IntegerMap&); |
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322 | |
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323 | public: |
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324 | |
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325 | ///\e |
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326 | Reference operator[](Key k) { |
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327 | return _vector[k]; |
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328 | } |
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329 | |
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330 | /// \e |
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331 | ConstReference operator[](Key k) const { |
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332 | return _vector[k]; |
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333 | } |
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334 | |
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335 | /// \e |
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336 | void set(const Key &k, const T& t) { |
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337 | _vector[k] = t; |
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338 | } |
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339 | |
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340 | }; |
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341 | |
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342 | ///Returns an \c IntegerMap class |
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343 | |
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344 | ///This function just returns an \c IntegerMap class. |
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345 | ///\relates IntegerMap |
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346 | template<typename T> |
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347 | inline IntegerMap<T> integerMap(int size = 0, const T& value = T()) { |
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348 | return IntegerMap<T>(size, value); |
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349 | } |
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350 | |
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351 | /// @} |
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352 | |
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353 | /// \addtogroup map_adaptors |
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354 | /// @{ |
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355 | |
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356 | /// \brief Identity map. |
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357 | /// |
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358 | /// This map gives back the given key as value without any |
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359 | /// modification. |
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360 | template <typename T> |
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361 | class IdentityMap : public MapBase<T, T> { |
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362 | public: |
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363 | typedef MapBase<T, T> Parent; |
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364 | typedef typename Parent::Key Key; |
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365 | typedef typename Parent::Value Value; |
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366 | |
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367 | /// \e |
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368 | const T& operator[](const T& t) const { |
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369 | return t; |
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370 | } |
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371 | }; |
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372 | |
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373 | ///Returns an \c IdentityMap class |
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374 | |
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375 | ///This function just returns an \c IdentityMap class. |
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376 | ///\relates IdentityMap |
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377 | template<typename T> |
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378 | inline IdentityMap<T> identityMap() { |
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379 | return IdentityMap<T>(); |
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380 | } |
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381 | |
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382 | |
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383 | ///\brief Convert the \c Value of a map to another type using |
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384 | ///the default conversion. |
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385 | /// |
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386 | ///This \ref concepts::ReadMap "read only map" |
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387 | ///converts the \c Value of a map to type \c T. |
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388 | ///Its \c Key is inherited from \c M. |
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389 | template <typename M, typename T> |
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390 | class ConvertMap : public MapBase<typename M::Key, T> { |
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391 | const M& m; |
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392 | public: |
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393 | typedef MapBase<typename M::Key, T> Parent; |
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394 | typedef typename Parent::Key Key; |
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395 | typedef typename Parent::Value Value; |
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396 | |
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397 | ///Constructor |
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398 | |
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399 | ///Constructor. |
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400 | ///\param _m is the underlying map. |
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401 | ConvertMap(const M &_m) : m(_m) {}; |
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402 | |
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403 | /// \brief The subscript operator. |
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404 | /// |
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405 | /// The subscript operator. |
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406 | Value operator[](const Key& k) const {return m[k];} |
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407 | }; |
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408 | |
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409 | ///Returns a \c ConvertMap class |
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410 | |
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411 | ///This function just returns a \c ConvertMap class. |
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412 | ///\relates ConvertMap |
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413 | template<typename T, typename M> |
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414 | inline ConvertMap<M, T> convertMap(const M &m) { |
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415 | return ConvertMap<M, T>(m); |
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416 | } |
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417 | |
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418 | ///Simple wrapping of a map |
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419 | |
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420 | ///This \ref concepts::ReadMap "read only map" returns the simple |
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421 | ///wrapping of the given map. Sometimes the reference maps cannot be |
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422 | ///combined with simple read maps. This map adaptor wraps the given |
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423 | ///map to simple read map. |
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424 | /// |
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425 | ///\sa SimpleWriteMap |
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426 | /// |
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427 | /// \todo Revise the misleading name |
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428 | template<typename M> |
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429 | class SimpleMap : public MapBase<typename M::Key, typename M::Value> { |
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430 | const M& m; |
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431 | |
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432 | public: |
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433 | typedef MapBase<typename M::Key, typename M::Value> Parent; |
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434 | typedef typename Parent::Key Key; |
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435 | typedef typename Parent::Value Value; |
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436 | |
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437 | ///Constructor |
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438 | SimpleMap(const M &_m) : m(_m) {}; |
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439 | ///\e |
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440 | Value operator[](Key k) const {return m[k];} |
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441 | }; |
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442 | |
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443 | ///Returns a \c SimpleMap class |
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444 | |
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445 | ///This function just returns a \c SimpleMap class. |
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446 | ///\relates SimpleMap |
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447 | template<typename M> |
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448 | inline SimpleMap<M> simpleMap(const M &m) { |
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449 | return SimpleMap<M>(m); |
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450 | } |
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451 | |
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452 | ///Simple writable wrapping of a map |
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453 | |
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454 | ///This \ref concepts::ReadWriteMap "read-write map" returns the simple |
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455 | ///wrapping of the given map. Sometimes the reference maps cannot be |
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456 | ///combined with simple read-write maps. This map adaptor wraps the |
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457 | ///given map to simple read-write map. |
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458 | /// |
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459 | ///\sa SimpleMap |
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460 | /// |
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461 | /// \todo Revise the misleading name |
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462 | template<typename M> |
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463 | class SimpleWriteMap : public MapBase<typename M::Key, typename M::Value> { |
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464 | M& m; |
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465 | |
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466 | public: |
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467 | typedef MapBase<typename M::Key, typename M::Value> Parent; |
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468 | typedef typename Parent::Key Key; |
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469 | typedef typename Parent::Value Value; |
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470 | |
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471 | ///Constructor |
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472 | SimpleWriteMap(M &_m) : m(_m) {}; |
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473 | ///\e |
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474 | Value operator[](Key k) const {return m[k];} |
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475 | ///\e |
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476 | void set(Key k, const Value& c) { m.set(k, c); } |
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477 | }; |
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478 | |
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479 | ///Returns a \c SimpleWriteMap class |
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480 | |
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481 | ///This function just returns a \c SimpleWriteMap class. |
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482 | ///\relates SimpleWriteMap |
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483 | template<typename M> |
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484 | inline SimpleWriteMap<M> simpleWriteMap(M &m) { |
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485 | return SimpleWriteMap<M>(m); |
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486 | } |
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487 | |
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488 | ///Sum of two maps |
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489 | |
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490 | ///This \ref concepts::ReadMap "read only map" returns the sum of the two |
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491 | ///given maps. |
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492 | ///Its \c Key and \c Value are inherited from \c M1. |
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493 | ///The \c Key and \c Value of M2 must be convertible to those of \c M1. |
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494 | template<typename M1, typename M2> |
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495 | class AddMap : public MapBase<typename M1::Key, typename M1::Value> { |
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496 | const M1& m1; |
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497 | const M2& m2; |
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498 | |
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499 | public: |
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500 | typedef MapBase<typename M1::Key, typename M1::Value> Parent; |
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501 | typedef typename Parent::Key Key; |
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502 | typedef typename Parent::Value Value; |
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503 | |
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504 | ///Constructor |
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505 | AddMap(const M1 &_m1,const M2 &_m2) : m1(_m1), m2(_m2) {}; |
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506 | ///\e |
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507 | Value operator[](Key k) const {return m1[k]+m2[k];} |
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508 | }; |
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509 | |
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510 | ///Returns an \c AddMap class |
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511 | |
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512 | ///This function just returns an \c AddMap class. |
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513 | ///\todo How to call these type of functions? |
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514 | /// |
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515 | ///\relates AddMap |
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516 | template<typename M1, typename M2> |
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517 | inline AddMap<M1, M2> addMap(const M1 &m1,const M2 &m2) { |
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518 | return AddMap<M1, M2>(m1,m2); |
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519 | } |
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520 | |
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521 | ///Shift a map with a constant. |
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522 | |
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523 | ///This \ref concepts::ReadMap "read only map" returns the sum of the |
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524 | ///given map and a constant value. |
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525 | ///Its \c Key and \c Value are inherited from \c M. |
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526 | /// |
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527 | ///Actually, |
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528 | ///\code |
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529 | /// ShiftMap<X> sh(x,v); |
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530 | ///\endcode |
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531 | ///is equivalent to |
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532 | ///\code |
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533 | /// ConstMap<X::Key, X::Value> c_tmp(v); |
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534 | /// AddMap<X, ConstMap<X::Key, X::Value> > sh(x,v); |
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535 | ///\endcode |
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536 | /// |
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537 | ///\sa ShiftWriteMap |
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538 | template<typename M, typename C = typename M::Value> |
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539 | class ShiftMap : public MapBase<typename M::Key, typename M::Value> { |
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540 | const M& m; |
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541 | C v; |
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542 | public: |
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543 | typedef MapBase<typename M::Key, typename M::Value> Parent; |
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544 | typedef typename Parent::Key Key; |
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545 | typedef typename Parent::Value Value; |
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546 | |
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547 | ///Constructor |
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548 | |
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549 | ///Constructor. |
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550 | ///\param _m is the undelying map. |
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551 | ///\param _v is the shift value. |
---|
552 | ShiftMap(const M &_m, const C &_v ) : m(_m), v(_v) {}; |
---|
553 | ///\e |
---|
554 | Value operator[](Key k) const {return m[k] + v;} |
---|
555 | }; |
---|
556 | |
---|
557 | ///Shift a map with a constant (ReadWrite version). |
---|
558 | |
---|
559 | ///This \ref concepts::ReadWriteMap "read-write map" returns the sum of the |
---|
560 | ///given map and a constant value. It makes also possible to write the map. |
---|
561 | ///Its \c Key and \c Value are inherited from \c M. |
---|
562 | /// |
---|
563 | ///\sa ShiftMap |
---|
564 | template<typename M, typename C = typename M::Value> |
---|
565 | class ShiftWriteMap : public MapBase<typename M::Key, typename M::Value> { |
---|
566 | M& m; |
---|
567 | C v; |
---|
568 | public: |
---|
569 | typedef MapBase<typename M::Key, typename M::Value> Parent; |
---|
570 | typedef typename Parent::Key Key; |
---|
571 | typedef typename Parent::Value Value; |
---|
572 | |
---|
573 | ///Constructor |
---|
574 | |
---|
575 | ///Constructor. |
---|
576 | ///\param _m is the undelying map. |
---|
577 | ///\param _v is the shift value. |
---|
578 | ShiftWriteMap(M &_m, const C &_v ) : m(_m), v(_v) {}; |
---|
579 | /// \e |
---|
580 | Value operator[](Key k) const {return m[k] + v;} |
---|
581 | /// \e |
---|
582 | void set(Key k, const Value& c) { m.set(k, c - v); } |
---|
583 | }; |
---|
584 | |
---|
585 | ///Returns a \c ShiftMap class |
---|
586 | |
---|
587 | ///This function just returns a \c ShiftMap class. |
---|
588 | ///\relates ShiftMap |
---|
589 | template<typename M, typename C> |
---|
590 | inline ShiftMap<M, C> shiftMap(const M &m,const C &v) { |
---|
591 | return ShiftMap<M, C>(m,v); |
---|
592 | } |
---|
593 | |
---|
594 | ///Returns a \c ShiftWriteMap class |
---|
595 | |
---|
596 | ///This function just returns a \c ShiftWriteMap class. |
---|
597 | ///\relates ShiftWriteMap |
---|
598 | template<typename M, typename C> |
---|
599 | inline ShiftWriteMap<M, C> shiftMap(M &m,const C &v) { |
---|
600 | return ShiftWriteMap<M, C>(m,v); |
---|
601 | } |
---|
602 | |
---|
603 | ///Difference of two maps |
---|
604 | |
---|
605 | ///This \ref concepts::ReadMap "read only map" returns the difference |
---|
606 | ///of the values of the two given maps. |
---|
607 | ///Its \c Key and \c Value are inherited from \c M1. |
---|
608 | ///The \c Key and \c Value of \c M2 must be convertible to those of \c M1. |
---|
609 | /// |
---|
610 | /// \todo Revise the misleading name |
---|
611 | template<typename M1, typename M2> |
---|
612 | class SubMap : public MapBase<typename M1::Key, typename M1::Value> { |
---|
613 | const M1& m1; |
---|
614 | const M2& m2; |
---|
615 | public: |
---|
616 | typedef MapBase<typename M1::Key, typename M1::Value> Parent; |
---|
617 | typedef typename Parent::Key Key; |
---|
618 | typedef typename Parent::Value Value; |
---|
619 | |
---|
620 | ///Constructor |
---|
621 | SubMap(const M1 &_m1,const M2 &_m2) : m1(_m1), m2(_m2) {}; |
---|
622 | /// \e |
---|
623 | Value operator[](Key k) const {return m1[k]-m2[k];} |
---|
624 | }; |
---|
625 | |
---|
626 | ///Returns a \c SubMap class |
---|
627 | |
---|
628 | ///This function just returns a \c SubMap class. |
---|
629 | /// |
---|
630 | ///\relates SubMap |
---|
631 | template<typename M1, typename M2> |
---|
632 | inline SubMap<M1, M2> subMap(const M1 &m1, const M2 &m2) { |
---|
633 | return SubMap<M1, M2>(m1, m2); |
---|
634 | } |
---|
635 | |
---|
636 | ///Product of two maps |
---|
637 | |
---|
638 | ///This \ref concepts::ReadMap "read only map" returns the product of the |
---|
639 | ///values of the two given maps. |
---|
640 | ///Its \c Key and \c Value are inherited from \c M1. |
---|
641 | ///The \c Key and \c Value of \c M2 must be convertible to those of \c M1. |
---|
642 | template<typename M1, typename M2> |
---|
643 | class MulMap : public MapBase<typename M1::Key, typename M1::Value> { |
---|
644 | const M1& m1; |
---|
645 | const M2& m2; |
---|
646 | public: |
---|
647 | typedef MapBase<typename M1::Key, typename M1::Value> Parent; |
---|
648 | typedef typename Parent::Key Key; |
---|
649 | typedef typename Parent::Value Value; |
---|
650 | |
---|
651 | ///Constructor |
---|
652 | MulMap(const M1 &_m1,const M2 &_m2) : m1(_m1), m2(_m2) {}; |
---|
653 | /// \e |
---|
654 | Value operator[](Key k) const {return m1[k]*m2[k];} |
---|
655 | }; |
---|
656 | |
---|
657 | ///Returns a \c MulMap class |
---|
658 | |
---|
659 | ///This function just returns a \c MulMap class. |
---|
660 | ///\relates MulMap |
---|
661 | template<typename M1, typename M2> |
---|
662 | inline MulMap<M1, M2> mulMap(const M1 &m1,const M2 &m2) { |
---|
663 | return MulMap<M1, M2>(m1,m2); |
---|
664 | } |
---|
665 | |
---|
666 | ///Scales a map with a constant. |
---|
667 | |
---|
668 | ///This \ref concepts::ReadMap "read only map" returns the value of the |
---|
669 | ///given map multiplied from the left side with a constant value. |
---|
670 | ///Its \c Key and \c Value are inherited from \c M. |
---|
671 | /// |
---|
672 | ///Actually, |
---|
673 | ///\code |
---|
674 | /// ScaleMap<X> sc(x,v); |
---|
675 | ///\endcode |
---|
676 | ///is equivalent to |
---|
677 | ///\code |
---|
678 | /// ConstMap<X::Key, X::Value> c_tmp(v); |
---|
679 | /// MulMap<X, ConstMap<X::Key, X::Value> > sc(x,v); |
---|
680 | ///\endcode |
---|
681 | /// |
---|
682 | ///\sa ScaleWriteMap |
---|
683 | template<typename M, typename C = typename M::Value> |
---|
684 | class ScaleMap : public MapBase<typename M::Key, typename M::Value> { |
---|
685 | const M& m; |
---|
686 | C v; |
---|
687 | public: |
---|
688 | typedef MapBase<typename M::Key, typename M::Value> Parent; |
---|
689 | typedef typename Parent::Key Key; |
---|
690 | typedef typename Parent::Value Value; |
---|
691 | |
---|
692 | ///Constructor |
---|
693 | |
---|
694 | ///Constructor. |
---|
695 | ///\param _m is the undelying map. |
---|
696 | ///\param _v is the scaling value. |
---|
697 | ScaleMap(const M &_m, const C &_v ) : m(_m), v(_v) {}; |
---|
698 | /// \e |
---|
699 | Value operator[](Key k) const {return v * m[k];} |
---|
700 | }; |
---|
701 | |
---|
702 | ///Scales a map with a constant (ReadWrite version). |
---|
703 | |
---|
704 | ///This \ref concepts::ReadWriteMap "read-write map" returns the value of the |
---|
705 | ///given map multiplied from the left side with a constant value. It can |
---|
706 | ///also be used as write map if the \c / operator is defined between |
---|
707 | ///\c Value and \c C and the given multiplier is not zero. |
---|
708 | ///Its \c Key and \c Value are inherited from \c M. |
---|
709 | /// |
---|
710 | ///\sa ScaleMap |
---|
711 | template<typename M, typename C = typename M::Value> |
---|
712 | class ScaleWriteMap : public MapBase<typename M::Key, typename M::Value> { |
---|
713 | M& m; |
---|
714 | C v; |
---|
715 | public: |
---|
716 | typedef MapBase<typename M::Key, typename M::Value> Parent; |
---|
717 | typedef typename Parent::Key Key; |
---|
718 | typedef typename Parent::Value Value; |
---|
719 | |
---|
720 | ///Constructor |
---|
721 | |
---|
722 | ///Constructor. |
---|
723 | ///\param _m is the undelying map. |
---|
724 | ///\param _v is the scaling value. |
---|
725 | ScaleWriteMap(M &_m, const C &_v ) : m(_m), v(_v) {}; |
---|
726 | /// \e |
---|
727 | Value operator[](Key k) const {return v * m[k];} |
---|
728 | /// \e |
---|
729 | void set(Key k, const Value& c) { m.set(k, c / v);} |
---|
730 | }; |
---|
731 | |
---|
732 | ///Returns a \c ScaleMap class |
---|
733 | |
---|
734 | ///This function just returns a \c ScaleMap class. |
---|
735 | ///\relates ScaleMap |
---|
736 | template<typename M, typename C> |
---|
737 | inline ScaleMap<M, C> scaleMap(const M &m,const C &v) { |
---|
738 | return ScaleMap<M, C>(m,v); |
---|
739 | } |
---|
740 | |
---|
741 | ///Returns a \c ScaleWriteMap class |
---|
742 | |
---|
743 | ///This function just returns a \c ScaleWriteMap class. |
---|
744 | ///\relates ScaleWriteMap |
---|
745 | template<typename M, typename C> |
---|
746 | inline ScaleWriteMap<M, C> scaleMap(M &m,const C &v) { |
---|
747 | return ScaleWriteMap<M, C>(m,v); |
---|
748 | } |
---|
749 | |
---|
750 | ///Quotient of two maps |
---|
751 | |
---|
752 | ///This \ref concepts::ReadMap "read only map" returns the quotient of the |
---|
753 | ///values of the two given maps. |
---|
754 | ///Its \c Key and \c Value are inherited from \c M1. |
---|
755 | ///The \c Key and \c Value of \c M2 must be convertible to those of \c M1. |
---|
756 | template<typename M1, typename M2> |
---|
757 | class DivMap : public MapBase<typename M1::Key, typename M1::Value> { |
---|
758 | const M1& m1; |
---|
759 | const M2& m2; |
---|
760 | public: |
---|
761 | typedef MapBase<typename M1::Key, typename M1::Value> Parent; |
---|
762 | typedef typename Parent::Key Key; |
---|
763 | typedef typename Parent::Value Value; |
---|
764 | |
---|
765 | ///Constructor |
---|
766 | DivMap(const M1 &_m1,const M2 &_m2) : m1(_m1), m2(_m2) {}; |
---|
767 | /// \e |
---|
768 | Value operator[](Key k) const {return m1[k]/m2[k];} |
---|
769 | }; |
---|
770 | |
---|
771 | ///Returns a \c DivMap class |
---|
772 | |
---|
773 | ///This function just returns a \c DivMap class. |
---|
774 | ///\relates DivMap |
---|
775 | template<typename M1, typename M2> |
---|
776 | inline DivMap<M1, M2> divMap(const M1 &m1,const M2 &m2) { |
---|
777 | return DivMap<M1, M2>(m1,m2); |
---|
778 | } |
---|
779 | |
---|
780 | ///Composition of two maps |
---|
781 | |
---|
782 | ///This \ref concepts::ReadMap "read only map" returns the composition of |
---|
783 | ///two given maps. |
---|
784 | ///That is to say, if \c m1 is of type \c M1 and \c m2 is of \c M2, |
---|
785 | ///then for |
---|
786 | ///\code |
---|
787 | /// ComposeMap<M1, M2> cm(m1,m2); |
---|
788 | ///\endcode |
---|
789 | /// <tt>cm[x]</tt> will be equal to <tt>m1[m2[x]]</tt>. |
---|
790 | /// |
---|
791 | ///Its \c Key is inherited from \c M2 and its \c Value is from \c M1. |
---|
792 | ///\c M2::Value must be convertible to \c M1::Key. |
---|
793 | /// |
---|
794 | ///\sa CombineMap |
---|
795 | /// |
---|
796 | ///\todo Check the requirements. |
---|
797 | template <typename M1, typename M2> |
---|
798 | class ComposeMap : public MapBase<typename M2::Key, typename M1::Value> { |
---|
799 | const M1& m1; |
---|
800 | const M2& m2; |
---|
801 | public: |
---|
802 | typedef MapBase<typename M2::Key, typename M1::Value> Parent; |
---|
803 | typedef typename Parent::Key Key; |
---|
804 | typedef typename Parent::Value Value; |
---|
805 | |
---|
806 | ///Constructor |
---|
807 | ComposeMap(const M1 &_m1,const M2 &_m2) : m1(_m1), m2(_m2) {}; |
---|
808 | |
---|
809 | /// \e |
---|
810 | |
---|
811 | |
---|
812 | /// \todo Use the MapTraits once it is ported. |
---|
813 | /// |
---|
814 | |
---|
815 | //typename MapTraits<M1>::ConstReturnValue |
---|
816 | typename M1::Value |
---|
817 | operator[](Key k) const {return m1[m2[k]];} |
---|
818 | }; |
---|
819 | |
---|
820 | ///Returns a \c ComposeMap class |
---|
821 | |
---|
822 | ///This function just returns a \c ComposeMap class. |
---|
823 | ///\relates ComposeMap |
---|
824 | template <typename M1, typename M2> |
---|
825 | inline ComposeMap<M1, M2> composeMap(const M1 &m1,const M2 &m2) { |
---|
826 | return ComposeMap<M1, M2>(m1,m2); |
---|
827 | } |
---|
828 | |
---|
829 | ///Combine of two maps using an STL (binary) functor. |
---|
830 | |
---|
831 | ///Combine of two maps using an STL (binary) functor. |
---|
832 | /// |
---|
833 | ///This \ref concepts::ReadMap "read only map" takes two maps and a |
---|
834 | ///binary functor and returns the composition of the two |
---|
835 | ///given maps unsing the functor. |
---|
836 | ///That is to say, if \c m1 and \c m2 is of type \c M1 and \c M2 |
---|
837 | ///and \c f is of \c F, then for |
---|
838 | ///\code |
---|
839 | /// CombineMap<M1,M2,F,V> cm(m1,m2,f); |
---|
840 | ///\endcode |
---|
841 | /// <tt>cm[x]</tt> will be equal to <tt>f(m1[x],m2[x])</tt> |
---|
842 | /// |
---|
843 | ///Its \c Key is inherited from \c M1 and its \c Value is \c V. |
---|
844 | ///\c M2::Value and \c M1::Value must be convertible to the corresponding |
---|
845 | ///input parameter of \c F and the return type of \c F must be convertible |
---|
846 | ///to \c V. |
---|
847 | /// |
---|
848 | ///\sa ComposeMap |
---|
849 | /// |
---|
850 | ///\todo Check the requirements. |
---|
851 | template<typename M1, typename M2, typename F, |
---|
852 | typename V = typename F::result_type> |
---|
853 | class CombineMap : public MapBase<typename M1::Key, V> { |
---|
854 | const M1& m1; |
---|
855 | const M2& m2; |
---|
856 | F f; |
---|
857 | public: |
---|
858 | typedef MapBase<typename M1::Key, V> Parent; |
---|
859 | typedef typename Parent::Key Key; |
---|
860 | typedef typename Parent::Value Value; |
---|
861 | |
---|
862 | ///Constructor |
---|
863 | CombineMap(const M1 &_m1,const M2 &_m2,const F &_f = F()) |
---|
864 | : m1(_m1), m2(_m2), f(_f) {}; |
---|
865 | /// \e |
---|
866 | Value operator[](Key k) const {return f(m1[k],m2[k]);} |
---|
867 | }; |
---|
868 | |
---|
869 | ///Returns a \c CombineMap class |
---|
870 | |
---|
871 | ///This function just returns a \c CombineMap class. |
---|
872 | /// |
---|
873 | ///For example if \c m1 and \c m2 are both \c double valued maps, then |
---|
874 | ///\code |
---|
875 | ///combineMap(m1,m2,std::plus<double>()) |
---|
876 | ///\endcode |
---|
877 | ///is equivalent to |
---|
878 | ///\code |
---|
879 | ///addMap(m1,m2) |
---|
880 | ///\endcode |
---|
881 | /// |
---|
882 | ///This function is specialized for adaptable binary function |
---|
883 | ///classes and C++ functions. |
---|
884 | /// |
---|
885 | ///\relates CombineMap |
---|
886 | template<typename M1, typename M2, typename F, typename V> |
---|
887 | inline CombineMap<M1, M2, F, V> |
---|
888 | combineMap(const M1& m1,const M2& m2, const F& f) { |
---|
889 | return CombineMap<M1, M2, F, V>(m1,m2,f); |
---|
890 | } |
---|
891 | |
---|
892 | template<typename M1, typename M2, typename F> |
---|
893 | inline CombineMap<M1, M2, F, typename F::result_type> |
---|
894 | combineMap(const M1& m1, const M2& m2, const F& f) { |
---|
895 | return combineMap<M1, M2, F, typename F::result_type>(m1,m2,f); |
---|
896 | } |
---|
897 | |
---|
898 | template<typename M1, typename M2, typename K1, typename K2, typename V> |
---|
899 | inline CombineMap<M1, M2, V (*)(K1, K2), V> |
---|
900 | combineMap(const M1 &m1, const M2 &m2, V (*f)(K1, K2)) { |
---|
901 | return combineMap<M1, M2, V (*)(K1, K2), V>(m1,m2,f); |
---|
902 | } |
---|
903 | |
---|
904 | ///Negative value of a map |
---|
905 | |
---|
906 | ///This \ref concepts::ReadMap "read only map" returns the negative |
---|
907 | ///value of the value returned by the given map. |
---|
908 | ///Its \c Key and \c Value are inherited from \c M. |
---|
909 | ///The unary \c - operator must be defined for \c Value, of course. |
---|
910 | /// |
---|
911 | ///\sa NegWriteMap |
---|
912 | template<typename M> |
---|
913 | class NegMap : public MapBase<typename M::Key, typename M::Value> { |
---|
914 | const M& m; |
---|
915 | public: |
---|
916 | typedef MapBase<typename M::Key, typename M::Value> Parent; |
---|
917 | typedef typename Parent::Key Key; |
---|
918 | typedef typename Parent::Value Value; |
---|
919 | |
---|
920 | ///Constructor |
---|
921 | NegMap(const M &_m) : m(_m) {}; |
---|
922 | /// \e |
---|
923 | Value operator[](Key k) const {return -m[k];} |
---|
924 | }; |
---|
925 | |
---|
926 | ///Negative value of a map (ReadWrite version) |
---|
927 | |
---|
928 | ///This \ref concepts::ReadWriteMap "read-write map" returns the negative |
---|
929 | ///value of the value returned by the given map. |
---|
930 | ///Its \c Key and \c Value are inherited from \c M. |
---|
931 | ///The unary \c - operator must be defined for \c Value, of course. |
---|
932 | /// |
---|
933 | /// \sa NegMap |
---|
934 | template<typename M> |
---|
935 | class NegWriteMap : public MapBase<typename M::Key, typename M::Value> { |
---|
936 | M& m; |
---|
937 | public: |
---|
938 | typedef MapBase<typename M::Key, typename M::Value> Parent; |
---|
939 | typedef typename Parent::Key Key; |
---|
940 | typedef typename Parent::Value Value; |
---|
941 | |
---|
942 | ///Constructor |
---|
943 | NegWriteMap(M &_m) : m(_m) {}; |
---|
944 | /// \e |
---|
945 | Value operator[](Key k) const {return -m[k];} |
---|
946 | /// \e |
---|
947 | void set(Key k, const Value& v) { m.set(k, -v); } |
---|
948 | }; |
---|
949 | |
---|
950 | ///Returns a \c NegMap class |
---|
951 | |
---|
952 | ///This function just returns a \c NegMap class. |
---|
953 | ///\relates NegMap |
---|
954 | template <typename M> |
---|
955 | inline NegMap<M> negMap(const M &m) { |
---|
956 | return NegMap<M>(m); |
---|
957 | } |
---|
958 | |
---|
959 | ///Returns a \c NegWriteMap class |
---|
960 | |
---|
961 | ///This function just returns a \c NegWriteMap class. |
---|
962 | ///\relates NegWriteMap |
---|
963 | template <typename M> |
---|
964 | inline NegWriteMap<M> negMap(M &m) { |
---|
965 | return NegWriteMap<M>(m); |
---|
966 | } |
---|
967 | |
---|
968 | ///Absolute value of a map |
---|
969 | |
---|
970 | ///This \ref concepts::ReadMap "read only map" returns the absolute value |
---|
971 | ///of the value returned by the given map. |
---|
972 | ///Its \c Key and \c Value are inherited from \c M. |
---|
973 | ///\c Value must be comparable to \c 0 and the unary \c - |
---|
974 | ///operator must be defined for it, of course. |
---|
975 | template<typename M> |
---|
976 | class AbsMap : public MapBase<typename M::Key, typename M::Value> { |
---|
977 | const M& m; |
---|
978 | public: |
---|
979 | typedef MapBase<typename M::Key, typename M::Value> Parent; |
---|
980 | typedef typename Parent::Key Key; |
---|
981 | typedef typename Parent::Value Value; |
---|
982 | |
---|
983 | ///Constructor |
---|
984 | AbsMap(const M &_m) : m(_m) {}; |
---|
985 | /// \e |
---|
986 | Value operator[](Key k) const { |
---|
987 | Value tmp = m[k]; |
---|
988 | return tmp >= 0 ? tmp : -tmp; |
---|
989 | } |
---|
990 | |
---|
991 | }; |
---|
992 | |
---|
993 | ///Returns an \c AbsMap class |
---|
994 | |
---|
995 | ///This function just returns an \c AbsMap class. |
---|
996 | ///\relates AbsMap |
---|
997 | template<typename M> |
---|
998 | inline AbsMap<M> absMap(const M &m) { |
---|
999 | return AbsMap<M>(m); |
---|
1000 | } |
---|
1001 | |
---|
1002 | ///Converts an STL style functor to a map |
---|
1003 | |
---|
1004 | ///This \ref concepts::ReadMap "read only map" returns the value |
---|
1005 | ///of a given functor. |
---|
1006 | /// |
---|
1007 | ///Template parameters \c K and \c V will become its |
---|
1008 | ///\c Key and \c Value. |
---|
1009 | ///In most cases they have to be given explicitly because a |
---|
1010 | ///functor typically does not provide such typedefs. |
---|
1011 | /// |
---|
1012 | ///Parameter \c F is the type of the used functor. |
---|
1013 | /// |
---|
1014 | ///\sa MapFunctor |
---|
1015 | template<typename F, |
---|
1016 | typename K = typename F::argument_type, |
---|
1017 | typename V = typename F::result_type> |
---|
1018 | class FunctorMap : public MapBase<K, V> { |
---|
1019 | F f; |
---|
1020 | public: |
---|
1021 | typedef MapBase<K, V> Parent; |
---|
1022 | typedef typename Parent::Key Key; |
---|
1023 | typedef typename Parent::Value Value; |
---|
1024 | |
---|
1025 | ///Constructor |
---|
1026 | FunctorMap(const F &_f = F()) : f(_f) {} |
---|
1027 | /// \e |
---|
1028 | Value operator[](Key k) const { return f(k);} |
---|
1029 | }; |
---|
1030 | |
---|
1031 | ///Returns a \c FunctorMap class |
---|
1032 | |
---|
1033 | ///This function just returns a \c FunctorMap class. |
---|
1034 | /// |
---|
1035 | ///It is specialized for adaptable function classes and |
---|
1036 | ///C++ functions. |
---|
1037 | ///\relates FunctorMap |
---|
1038 | template<typename K, typename V, typename F> inline |
---|
1039 | FunctorMap<F, K, V> functorMap(const F &f) { |
---|
1040 | return FunctorMap<F, K, V>(f); |
---|
1041 | } |
---|
1042 | |
---|
1043 | template <typename F> inline |
---|
1044 | FunctorMap<F, typename F::argument_type, typename F::result_type> |
---|
1045 | functorMap(const F &f) { |
---|
1046 | return FunctorMap<F, typename F::argument_type, |
---|
1047 | typename F::result_type>(f); |
---|
1048 | } |
---|
1049 | |
---|
1050 | template <typename K, typename V> inline |
---|
1051 | FunctorMap<V (*)(K), K, V> functorMap(V (*f)(K)) { |
---|
1052 | return FunctorMap<V (*)(K), K, V>(f); |
---|
1053 | } |
---|
1054 | |
---|
1055 | |
---|
1056 | ///Converts a map to an STL style (unary) functor |
---|
1057 | |
---|
1058 | ///This class Converts a map to an STL style (unary) functor. |
---|
1059 | ///that is it provides an <tt>operator()</tt> to read its values. |
---|
1060 | /// |
---|
1061 | ///For the sake of convenience it also works as |
---|
1062 | ///a ususal \ref concepts::ReadMap "readable map", |
---|
1063 | ///i.e. <tt>operator[]</tt> and the \c Key and \c Value typedefs also exist. |
---|
1064 | /// |
---|
1065 | ///\sa FunctorMap |
---|
1066 | template <typename M> |
---|
1067 | class MapFunctor : public MapBase<typename M::Key, typename M::Value> { |
---|
1068 | const M& m; |
---|
1069 | public: |
---|
1070 | typedef MapBase<typename M::Key, typename M::Value> Parent; |
---|
1071 | typedef typename Parent::Key Key; |
---|
1072 | typedef typename Parent::Value Value; |
---|
1073 | |
---|
1074 | typedef typename M::Key argument_type; |
---|
1075 | typedef typename M::Value result_type; |
---|
1076 | |
---|
1077 | ///Constructor |
---|
1078 | MapFunctor(const M &_m) : m(_m) {}; |
---|
1079 | ///\e |
---|
1080 | Value operator()(Key k) const {return m[k];} |
---|
1081 | ///\e |
---|
1082 | Value operator[](Key k) const {return m[k];} |
---|
1083 | }; |
---|
1084 | |
---|
1085 | ///Returns a \c MapFunctor class |
---|
1086 | |
---|
1087 | ///This function just returns a \c MapFunctor class. |
---|
1088 | ///\relates MapFunctor |
---|
1089 | template<typename M> |
---|
1090 | inline MapFunctor<M> mapFunctor(const M &m) { |
---|
1091 | return MapFunctor<M>(m); |
---|
1092 | } |
---|
1093 | |
---|
1094 | ///Applies all map setting operations to two maps |
---|
1095 | |
---|
1096 | ///This map has two \ref concepts::ReadMap "readable map" |
---|
1097 | ///parameters and each read request will be passed just to the |
---|
1098 | ///first map. This class is the just readable map type of the \c ForkWriteMap. |
---|
1099 | /// |
---|
1100 | ///The \c Key and \c Value are inherited from \c M1. |
---|
1101 | ///The \c Key and \c Value of M2 must be convertible from those of \c M1. |
---|
1102 | /// |
---|
1103 | ///\sa ForkWriteMap |
---|
1104 | /// |
---|
1105 | /// \todo Why is it needed? |
---|
1106 | template<typename M1, typename M2> |
---|
1107 | class ForkMap : public MapBase<typename M1::Key, typename M1::Value> { |
---|
1108 | const M1& m1; |
---|
1109 | const M2& m2; |
---|
1110 | public: |
---|
1111 | typedef MapBase<typename M1::Key, typename M1::Value> Parent; |
---|
1112 | typedef typename Parent::Key Key; |
---|
1113 | typedef typename Parent::Value Value; |
---|
1114 | |
---|
1115 | ///Constructor |
---|
1116 | ForkMap(const M1 &_m1, const M2 &_m2) : m1(_m1), m2(_m2) {}; |
---|
1117 | /// \e |
---|
1118 | Value operator[](Key k) const {return m1[k];} |
---|
1119 | }; |
---|
1120 | |
---|
1121 | |
---|
1122 | ///Applies all map setting operations to two maps |
---|
1123 | |
---|
1124 | ///This map has two \ref concepts::WriteMap "writable map" |
---|
1125 | ///parameters and each write request will be passed to both of them. |
---|
1126 | ///If \c M1 is also \ref concepts::ReadMap "readable", |
---|
1127 | ///then the read operations will return the |
---|
1128 | ///corresponding values of \c M1. |
---|
1129 | /// |
---|
1130 | ///The \c Key and \c Value are inherited from \c M1. |
---|
1131 | ///The \c Key and \c Value of M2 must be convertible from those of \c M1. |
---|
1132 | /// |
---|
1133 | ///\sa ForkMap |
---|
1134 | template<typename M1, typename M2> |
---|
1135 | class ForkWriteMap : public MapBase<typename M1::Key, typename M1::Value> { |
---|
1136 | M1& m1; |
---|
1137 | M2& m2; |
---|
1138 | public: |
---|
1139 | typedef MapBase<typename M1::Key, typename M1::Value> Parent; |
---|
1140 | typedef typename Parent::Key Key; |
---|
1141 | typedef typename Parent::Value Value; |
---|
1142 | |
---|
1143 | ///Constructor |
---|
1144 | ForkWriteMap(M1 &_m1, M2 &_m2) : m1(_m1), m2(_m2) {}; |
---|
1145 | ///\e |
---|
1146 | Value operator[](Key k) const {return m1[k];} |
---|
1147 | ///\e |
---|
1148 | void set(Key k, const Value &v) {m1.set(k,v); m2.set(k,v);} |
---|
1149 | }; |
---|
1150 | |
---|
1151 | ///Returns a \c ForkMap class |
---|
1152 | |
---|
1153 | ///This function just returns a \c ForkMap class. |
---|
1154 | ///\relates ForkMap |
---|
1155 | template <typename M1, typename M2> |
---|
1156 | inline ForkMap<M1, M2> forkMap(const M1 &m1, const M2 &m2) { |
---|
1157 | return ForkMap<M1, M2>(m1,m2); |
---|
1158 | } |
---|
1159 | |
---|
1160 | ///Returns a \c ForkWriteMap class |
---|
1161 | |
---|
1162 | ///This function just returns a \c ForkWriteMap class. |
---|
1163 | ///\relates ForkWriteMap |
---|
1164 | template <typename M1, typename M2> |
---|
1165 | inline ForkWriteMap<M1, M2> forkMap(M1 &m1, M2 &m2) { |
---|
1166 | return ForkWriteMap<M1, M2>(m1,m2); |
---|
1167 | } |
---|
1168 | |
---|
1169 | |
---|
1170 | |
---|
1171 | /* ************* BOOL MAPS ******************* */ |
---|
1172 | |
---|
1173 | ///Logical 'not' of a map |
---|
1174 | |
---|
1175 | ///This bool \ref concepts::ReadMap "read only map" returns the |
---|
1176 | ///logical negation of the value returned by the given map. |
---|
1177 | ///Its \c Key is inherited from \c M, its Value is \c bool. |
---|
1178 | /// |
---|
1179 | ///\sa NotWriteMap |
---|
1180 | template <typename M> |
---|
1181 | class NotMap : public MapBase<typename M::Key, bool> { |
---|
1182 | const M& m; |
---|
1183 | public: |
---|
1184 | typedef MapBase<typename M::Key, bool> Parent; |
---|
1185 | typedef typename Parent::Key Key; |
---|
1186 | typedef typename Parent::Value Value; |
---|
1187 | |
---|
1188 | /// Constructor |
---|
1189 | NotMap(const M &_m) : m(_m) {}; |
---|
1190 | ///\e |
---|
1191 | Value operator[](Key k) const {return !m[k];} |
---|
1192 | }; |
---|
1193 | |
---|
1194 | ///Logical 'not' of a map (ReadWrie version) |
---|
1195 | |
---|
1196 | ///This bool \ref concepts::ReadWriteMap "read-write map" returns the |
---|
1197 | ///logical negation of the value returned by the given map. When it is set, |
---|
1198 | ///the opposite value is set to the original map. |
---|
1199 | ///Its \c Key is inherited from \c M, its Value is \c bool. |
---|
1200 | /// |
---|
1201 | ///\sa NotMap |
---|
1202 | template <typename M> |
---|
1203 | class NotWriteMap : public MapBase<typename M::Key, bool> { |
---|
1204 | M& m; |
---|
1205 | public: |
---|
1206 | typedef MapBase<typename M::Key, bool> Parent; |
---|
1207 | typedef typename Parent::Key Key; |
---|
1208 | typedef typename Parent::Value Value; |
---|
1209 | |
---|
1210 | /// Constructor |
---|
1211 | NotWriteMap(M &_m) : m(_m) {}; |
---|
1212 | ///\e |
---|
1213 | Value operator[](Key k) const {return !m[k];} |
---|
1214 | ///\e |
---|
1215 | void set(Key k, bool v) { m.set(k, !v); } |
---|
1216 | }; |
---|
1217 | |
---|
1218 | ///Returns a \c NotMap class |
---|
1219 | |
---|
1220 | ///This function just returns a \c NotMap class. |
---|
1221 | ///\relates NotMap |
---|
1222 | template <typename M> |
---|
1223 | inline NotMap<M> notMap(const M &m) { |
---|
1224 | return NotMap<M>(m); |
---|
1225 | } |
---|
1226 | |
---|
1227 | ///Returns a \c NotWriteMap class |
---|
1228 | |
---|
1229 | ///This function just returns a \c NotWriteMap class. |
---|
1230 | ///\relates NotWriteMap |
---|
1231 | template <typename M> |
---|
1232 | inline NotWriteMap<M> notMap(M &m) { |
---|
1233 | return NotWriteMap<M>(m); |
---|
1234 | } |
---|
1235 | |
---|
1236 | namespace _maps_bits { |
---|
1237 | |
---|
1238 | template <typename Value> |
---|
1239 | struct Identity { |
---|
1240 | typedef Value argument_type; |
---|
1241 | typedef Value result_type; |
---|
1242 | Value operator()(const Value& val) const { |
---|
1243 | return val; |
---|
1244 | } |
---|
1245 | }; |
---|
1246 | |
---|
1247 | template <typename _Iterator, typename Enable = void> |
---|
1248 | struct IteratorTraits { |
---|
1249 | typedef typename std::iterator_traits<_Iterator>::value_type Value; |
---|
1250 | }; |
---|
1251 | |
---|
1252 | template <typename _Iterator> |
---|
1253 | struct IteratorTraits<_Iterator, |
---|
1254 | typename exists<typename _Iterator::container_type>::type> |
---|
1255 | { |
---|
1256 | typedef typename _Iterator::container_type::value_type Value; |
---|
1257 | }; |
---|
1258 | |
---|
1259 | } |
---|
1260 | |
---|
1261 | |
---|
1262 | /// \brief Writable bool map for logging each \c true assigned element |
---|
1263 | /// |
---|
1264 | /// A \ref concepts::ReadWriteMap "read-write" bool map for logging |
---|
1265 | /// each \c true assigned element, i.e it/ copies all the keys set |
---|
1266 | /// to \c true to the given iterator. |
---|
1267 | /// |
---|
1268 | /// \note The container of the iterator should contain space |
---|
1269 | /// for each element. |
---|
1270 | /// |
---|
1271 | /// The following example shows how you can write the edges found by the Prim |
---|
1272 | /// algorithm directly |
---|
1273 | /// to the standard output. |
---|
1274 | ///\code |
---|
1275 | /// typedef IdMap<Graph, Edge> EdgeIdMap; |
---|
1276 | /// EdgeIdMap edgeId(graph); |
---|
1277 | /// |
---|
1278 | /// typedef MapFunctor<EdgeIdMap> EdgeIdFunctor; |
---|
1279 | /// EdgeIdFunctor edgeIdFunctor(edgeId); |
---|
1280 | /// |
---|
1281 | /// StoreBoolMap<ostream_iterator<int>, EdgeIdFunctor> |
---|
1282 | /// writerMap(ostream_iterator<int>(cout, " "), edgeIdFunctor); |
---|
1283 | /// |
---|
1284 | /// prim(graph, cost, writerMap); |
---|
1285 | ///\endcode |
---|
1286 | /// |
---|
1287 | ///\sa BackInserterBoolMap |
---|
1288 | ///\sa FrontInserterBoolMap |
---|
1289 | ///\sa InserterBoolMap |
---|
1290 | /// |
---|
1291 | ///\todo Revise the name of this class and the related ones. |
---|
1292 | template <typename _Iterator, |
---|
1293 | typename _Functor = |
---|
1294 | _maps_bits::Identity<typename _maps_bits:: |
---|
1295 | IteratorTraits<_Iterator>::Value> > |
---|
1296 | class StoreBoolMap { |
---|
1297 | public: |
---|
1298 | typedef _Iterator Iterator; |
---|
1299 | |
---|
1300 | typedef typename _Functor::argument_type Key; |
---|
1301 | typedef bool Value; |
---|
1302 | |
---|
1303 | typedef _Functor Functor; |
---|
1304 | |
---|
1305 | /// Constructor |
---|
1306 | StoreBoolMap(Iterator it, const Functor& functor = Functor()) |
---|
1307 | : _begin(it), _end(it), _functor(functor) {} |
---|
1308 | |
---|
1309 | /// Gives back the given iterator set for the first key |
---|
1310 | Iterator begin() const { |
---|
1311 | return _begin; |
---|
1312 | } |
---|
1313 | |
---|
1314 | /// Gives back the the 'after the last' iterator |
---|
1315 | Iterator end() const { |
---|
1316 | return _end; |
---|
1317 | } |
---|
1318 | |
---|
1319 | /// The \c set function of the map |
---|
1320 | void set(const Key& key, Value value) const { |
---|
1321 | if (value) { |
---|
1322 | *_end++ = _functor(key); |
---|
1323 | } |
---|
1324 | } |
---|
1325 | |
---|
1326 | private: |
---|
1327 | Iterator _begin; |
---|
1328 | mutable Iterator _end; |
---|
1329 | Functor _functor; |
---|
1330 | }; |
---|
1331 | |
---|
1332 | /// \brief Writable bool map for logging each \c true assigned element in |
---|
1333 | /// a back insertable container. |
---|
1334 | /// |
---|
1335 | /// Writable bool map for logging each \c true assigned element by pushing |
---|
1336 | /// them into a back insertable container. |
---|
1337 | /// It can be used to retrieve the items into a standard |
---|
1338 | /// container. The next example shows how you can store the |
---|
1339 | /// edges found by the Prim algorithm in a vector. |
---|
1340 | /// |
---|
1341 | ///\code |
---|
1342 | /// vector<Edge> span_tree_edges; |
---|
1343 | /// BackInserterBoolMap<vector<Edge> > inserter_map(span_tree_edges); |
---|
1344 | /// prim(graph, cost, inserter_map); |
---|
1345 | ///\endcode |
---|
1346 | /// |
---|
1347 | ///\sa StoreBoolMap |
---|
1348 | ///\sa FrontInserterBoolMap |
---|
1349 | ///\sa InserterBoolMap |
---|
1350 | template <typename Container, |
---|
1351 | typename Functor = |
---|
1352 | _maps_bits::Identity<typename Container::value_type> > |
---|
1353 | class BackInserterBoolMap { |
---|
1354 | public: |
---|
1355 | typedef typename Functor::argument_type Key; |
---|
1356 | typedef bool Value; |
---|
1357 | |
---|
1358 | /// Constructor |
---|
1359 | BackInserterBoolMap(Container& _container, |
---|
1360 | const Functor& _functor = Functor()) |
---|
1361 | : container(_container), functor(_functor) {} |
---|
1362 | |
---|
1363 | /// The \c set function of the map |
---|
1364 | void set(const Key& key, Value value) { |
---|
1365 | if (value) { |
---|
1366 | container.push_back(functor(key)); |
---|
1367 | } |
---|
1368 | } |
---|
1369 | |
---|
1370 | private: |
---|
1371 | Container& container; |
---|
1372 | Functor functor; |
---|
1373 | }; |
---|
1374 | |
---|
1375 | /// \brief Writable bool map for logging each \c true assigned element in |
---|
1376 | /// a front insertable container. |
---|
1377 | /// |
---|
1378 | /// Writable bool map for logging each \c true assigned element by pushing |
---|
1379 | /// them into a front insertable container. |
---|
1380 | /// It can be used to retrieve the items into a standard |
---|
1381 | /// container. For example see \ref BackInserterBoolMap. |
---|
1382 | /// |
---|
1383 | ///\sa BackInserterBoolMap |
---|
1384 | ///\sa InserterBoolMap |
---|
1385 | template <typename Container, |
---|
1386 | typename Functor = |
---|
1387 | _maps_bits::Identity<typename Container::value_type> > |
---|
1388 | class FrontInserterBoolMap { |
---|
1389 | public: |
---|
1390 | typedef typename Functor::argument_type Key; |
---|
1391 | typedef bool Value; |
---|
1392 | |
---|
1393 | /// Constructor |
---|
1394 | FrontInserterBoolMap(Container& _container, |
---|
1395 | const Functor& _functor = Functor()) |
---|
1396 | : container(_container), functor(_functor) {} |
---|
1397 | |
---|
1398 | /// The \c set function of the map |
---|
1399 | void set(const Key& key, Value value) { |
---|
1400 | if (value) { |
---|
1401 | container.push_front(functor(key)); |
---|
1402 | } |
---|
1403 | } |
---|
1404 | |
---|
1405 | private: |
---|
1406 | Container& container; |
---|
1407 | Functor functor; |
---|
1408 | }; |
---|
1409 | |
---|
1410 | /// \brief Writable bool map for storing each \c true assigned element in |
---|
1411 | /// an insertable container. |
---|
1412 | /// |
---|
1413 | /// Writable bool map for storing each \c true assigned element in an |
---|
1414 | /// insertable container. It will insert all the keys set to \c true into |
---|
1415 | /// the container. |
---|
1416 | /// |
---|
1417 | /// For example, if you want to store the cut arcs of the strongly |
---|
1418 | /// connected components in a set you can use the next code: |
---|
1419 | /// |
---|
1420 | ///\code |
---|
1421 | /// set<Arc> cut_arcs; |
---|
1422 | /// InserterBoolMap<set<Arc> > inserter_map(cut_arcs); |
---|
1423 | /// stronglyConnectedCutArcs(digraph, cost, inserter_map); |
---|
1424 | ///\endcode |
---|
1425 | /// |
---|
1426 | ///\sa BackInserterBoolMap |
---|
1427 | ///\sa FrontInserterBoolMap |
---|
1428 | template <typename Container, |
---|
1429 | typename Functor = |
---|
1430 | _maps_bits::Identity<typename Container::value_type> > |
---|
1431 | class InserterBoolMap { |
---|
1432 | public: |
---|
1433 | typedef typename Container::value_type Key; |
---|
1434 | typedef bool Value; |
---|
1435 | |
---|
1436 | /// Constructor with specified iterator |
---|
1437 | |
---|
1438 | /// Constructor with specified iterator. |
---|
1439 | /// \param _container The container for storing the elements. |
---|
1440 | /// \param _it The elements will be inserted before this iterator. |
---|
1441 | /// \param _functor The functor that is used when an element is stored. |
---|
1442 | InserterBoolMap(Container& _container, typename Container::iterator _it, |
---|
1443 | const Functor& _functor = Functor()) |
---|
1444 | : container(_container), it(_it), functor(_functor) {} |
---|
1445 | |
---|
1446 | /// Constructor |
---|
1447 | |
---|
1448 | /// Constructor without specified iterator. |
---|
1449 | /// The elements will be inserted before <tt>_container.end()</tt>. |
---|
1450 | /// \param _container The container for storing the elements. |
---|
1451 | /// \param _functor The functor that is used when an element is stored. |
---|
1452 | InserterBoolMap(Container& _container, const Functor& _functor = Functor()) |
---|
1453 | : container(_container), it(_container.end()), functor(_functor) {} |
---|
1454 | |
---|
1455 | /// The \c set function of the map |
---|
1456 | void set(const Key& key, Value value) { |
---|
1457 | if (value) { |
---|
1458 | it = container.insert(it, functor(key)); |
---|
1459 | ++it; |
---|
1460 | } |
---|
1461 | } |
---|
1462 | |
---|
1463 | private: |
---|
1464 | Container& container; |
---|
1465 | typename Container::iterator it; |
---|
1466 | Functor functor; |
---|
1467 | }; |
---|
1468 | |
---|
1469 | /// \brief Writable bool map for filling each \c true assigned element with a |
---|
1470 | /// given value. |
---|
1471 | /// |
---|
1472 | /// Writable bool map for filling each \c true assigned element with a |
---|
1473 | /// given value. The value can set the container. |
---|
1474 | /// |
---|
1475 | /// The following code finds the connected components of a graph |
---|
1476 | /// and stores it in the \c comp map: |
---|
1477 | ///\code |
---|
1478 | /// typedef Graph::NodeMap<int> ComponentMap; |
---|
1479 | /// ComponentMap comp(graph); |
---|
1480 | /// typedef FillBoolMap<Graph::NodeMap<int> > ComponentFillerMap; |
---|
1481 | /// ComponentFillerMap filler(comp, 0); |
---|
1482 | /// |
---|
1483 | /// Dfs<Graph>::DefProcessedMap<ComponentFillerMap>::Create dfs(graph); |
---|
1484 | /// dfs.processedMap(filler); |
---|
1485 | /// dfs.init(); |
---|
1486 | /// for (NodeIt it(graph); it != INVALID; ++it) { |
---|
1487 | /// if (!dfs.reached(it)) { |
---|
1488 | /// dfs.addSource(it); |
---|
1489 | /// dfs.start(); |
---|
1490 | /// ++filler.fillValue(); |
---|
1491 | /// } |
---|
1492 | /// } |
---|
1493 | ///\endcode |
---|
1494 | template <typename Map> |
---|
1495 | class FillBoolMap { |
---|
1496 | public: |
---|
1497 | typedef typename Map::Key Key; |
---|
1498 | typedef bool Value; |
---|
1499 | |
---|
1500 | /// Constructor |
---|
1501 | FillBoolMap(Map& _map, const typename Map::Value& _fill) |
---|
1502 | : map(_map), fill(_fill) {} |
---|
1503 | |
---|
1504 | /// Constructor |
---|
1505 | FillBoolMap(Map& _map) |
---|
1506 | : map(_map), fill() {} |
---|
1507 | |
---|
1508 | /// Gives back the current fill value |
---|
1509 | const typename Map::Value& fillValue() const { |
---|
1510 | return fill; |
---|
1511 | } |
---|
1512 | |
---|
1513 | /// Gives back the current fill value |
---|
1514 | typename Map::Value& fillValue() { |
---|
1515 | return fill; |
---|
1516 | } |
---|
1517 | |
---|
1518 | /// Sets the current fill value |
---|
1519 | void fillValue(const typename Map::Value& _fill) { |
---|
1520 | fill = _fill; |
---|
1521 | } |
---|
1522 | |
---|
1523 | /// The \c set function of the map |
---|
1524 | void set(const Key& key, Value value) { |
---|
1525 | if (value) { |
---|
1526 | map.set(key, fill); |
---|
1527 | } |
---|
1528 | } |
---|
1529 | |
---|
1530 | private: |
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1531 | Map& map; |
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1532 | typename Map::Value fill; |
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1533 | }; |
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1534 | |
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1535 | |
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1536 | /// \brief Writable bool map for storing the sequence number of |
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1537 | /// \c true assignments. |
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1538 | /// |
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1539 | /// Writable bool map that stores for each \c true assigned elements |
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1540 | /// the sequence number of this setting. |
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1541 | /// It makes it easy to calculate the leaving |
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1542 | /// order of the nodes in the \c Dfs algorithm. |
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1543 | /// |
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1544 | ///\code |
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1545 | /// typedef Digraph::NodeMap<int> OrderMap; |
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1546 | /// OrderMap order(digraph); |
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1547 | /// typedef SettingOrderBoolMap<OrderMap> OrderSetterMap; |
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1548 | /// OrderSetterMap setter(order); |
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1549 | /// Dfs<Digraph>::DefProcessedMap<OrderSetterMap>::Create dfs(digraph); |
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1550 | /// dfs.processedMap(setter); |
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1551 | /// dfs.init(); |
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1552 | /// for (NodeIt it(digraph); it != INVALID; ++it) { |
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1553 | /// if (!dfs.reached(it)) { |
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1554 | /// dfs.addSource(it); |
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1555 | /// dfs.start(); |
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1556 | /// } |
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1557 | /// } |
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1558 | ///\endcode |
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1559 | /// |
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1560 | /// The storing of the discovering order is more difficult because the |
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1561 | /// ReachedMap should be readable in the dfs algorithm but the setting |
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1562 | /// order map is not readable. Thus we must use the fork map: |
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1563 | /// |
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1564 | ///\code |
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1565 | /// typedef Digraph::NodeMap<int> OrderMap; |
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1566 | /// OrderMap order(digraph); |
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1567 | /// typedef SettingOrderBoolMap<OrderMap> OrderSetterMap; |
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1568 | /// OrderSetterMap setter(order); |
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1569 | /// typedef Digraph::NodeMap<bool> StoreMap; |
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1570 | /// StoreMap store(digraph); |
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1571 | /// |
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1572 | /// typedef ForkWriteMap<StoreMap, OrderSetterMap> ReachedMap; |
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1573 | /// ReachedMap reached(store, setter); |
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1574 | /// |
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1575 | /// Dfs<Digraph>::DefReachedMap<ReachedMap>::Create dfs(digraph); |
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1576 | /// dfs.reachedMap(reached); |
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1577 | /// dfs.init(); |
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1578 | /// for (NodeIt it(digraph); it != INVALID; ++it) { |
---|
1579 | /// if (!dfs.reached(it)) { |
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1580 | /// dfs.addSource(it); |
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1581 | /// dfs.start(); |
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1582 | /// } |
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1583 | /// } |
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1584 | ///\endcode |
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1585 | template <typename Map> |
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1586 | class SettingOrderBoolMap { |
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1587 | public: |
---|
1588 | typedef typename Map::Key Key; |
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1589 | typedef bool Value; |
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1590 | |
---|
1591 | /// Constructor |
---|
1592 | SettingOrderBoolMap(Map& _map) |
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1593 | : map(_map), counter(0) {} |
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1594 | |
---|
1595 | /// Number of set operations. |
---|
1596 | int num() const { |
---|
1597 | return counter; |
---|
1598 | } |
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1599 | |
---|
1600 | /// The \c set function of the map |
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1601 | void set(const Key& key, Value value) { |
---|
1602 | if (value) { |
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1603 | map.set(key, counter++); |
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1604 | } |
---|
1605 | } |
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1606 | |
---|
1607 | private: |
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1608 | Map& map; |
---|
1609 | int counter; |
---|
1610 | }; |
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1611 | |
---|
1612 | /// @} |
---|
1613 | } |
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1614 | |
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1615 | #endif // LEMON_MAPS_H |
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